import 'dart:convert';

import 'package:flutter/material.dart';


void main() {
  runApp(MaterialApp(home: const _SecondScreen()));
}

class _SecondScreen extends StatelessWidget {
  const _SecondScreen({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Second Screen'),
      ),
      body:SizedBox01()
    );
  }
}

class SizedBox01 extends StatelessWidget {
  const SizedBox01({super.key});
  @override
  Widget build(BuildContext context) {
    return
        SizedBox(width: 500,height: 500,child:
        Container(
          // height: double.infinity,
          height: 100,
          width: 100,
          // width: double.infinity,
          color: Colors.blue[500],
        ),
    );
  }
}

